Step 1: Cover the leather hard pot with colored slip or underglaze.
Step 2: Wait for the slip/underglaze to dry
Step 3: Plan out desired design with a pencil (no worries! The charcoal will burn off in the kiln!)
Step 4: Carve out desired design with a carving tool (I used the PF1 carving tool from Diamond Core Tools) or a ball stylus.
Step 5: Brush off hanging clay bits with a soft paintbrush.